Prod­uct Test: Dig­i­tal tyre pres­sure gauges

Ten gauges go head to head – which one should you buy?

Car Mechanics (UK) - - Contents -

There are many as­pects of dig­i­tal tyre gauges that we wanted to as­sess. Top of the list was ac­cu­racy, so we con­sid­ered a suit­able test pro­ce­dure and looked into mak­ing a manome­ter, which con­sists of a large, wa­ter­filled, U-shaped tube that’s sealed at one end with a Schrader valve. We could have used this to cal­cu­late the air pres­sure at one end and see whether the dig­i­tal tyre pres­sure gauges were ac­cu­rate in their mea­sure­ments. How­ever, the size of the manome­ter to cater for the range of pres­sure we wanted to test made it un­fea­si­ble, plus we had no way of know­ing whether it would be ac­cu­rate. So, we con­sulted one of the man­u­fac­tur­ers of our dig­i­tal tyre pres­sure gauges – PCL of Sheffield – to see if they had a dig­i­tal manome­ter. They agreed to lend it to us to use for test­ing, but were not in­volved in the test them­selves.

We con­ducted three tests per gauge at 30-40Psi. We found all of the gauges were be­tween 2.6-3% ac­cu­rate, and all of them over-read (see the ac­cu­racy rat­ing for each gauge). How­ever, our find­ings were based on the as­sump­tion that the dig­i­tal manome­ter was ac­cu­rate.

So we broad­ened our test­ing to look at how easy each gauge was to use, what ad­di­tional fea­tures they of­fered (eg, a light), their price and whether the bat­ter­ies could be re­placed. We also tested the gauges on a va­ri­ety of wheels to see whether par­tic­u­lar tyre valves were more awk­ward than oth­ers to ac­cess.

Newspapers in English

Newspapers from UK

© PressReader. All rights reserved.